Hi Alan,
It depends on what you're doing. Could you give a bit more info? What is
it that you are transforming i.e. a point, vector, normal, matrix, etc?
Are you trying to go from local space to world, or the world to local
using the inverse global matrix? Or are you just concatenating transforms?
> Hi Andy,
>
> Thanks - most appreciated. I've been accessing it within a custom
> parameter. Though I've got another vaguely related question.
>
> Does the matrix multiply operation rotate before translation?
>
> Cheers,
>
> Alan.
>
> On 7/18/05, Andrew Nicholas <andy(at)andynicholas.com> wrote:
>> Hi Alan,
>>
>> You might want to check what class of object you're starting with by
>> using
>> the GetClassIDName() method. Sometimes you won't always have what you
>> think you should have. I've been caught out a few times by this.
>>
>> The code below obtains the PolygonMesh object from a polymesh input
>> connection of a SCOP:
>>
>>
>> XSI::InputPort polyMeshPort(op.GetPort(L"polymshIn",L"Group_0",0));
>> XSI::Primitive primitive(polyMeshPort.GetValue());
>>
>> //Get geometry object from primitive
>> XSI::Geometry geometry(primitive.GetGeometry());
>>
>> //Check that the geometry is actually a polygon mesh
>> if(!geometry.IsA(XSI::siPolygonMeshID)) return XSI::CStatus::Fail;
>>
>> //Create the polygon mesh object
>> XSI::PolygonMesh polyMesh(geometry);
>>
>> Hope this helps.
>>
>> Cheers
>>
>> Andy
>>
>>
>>
>>
>>
>> > When I run .IsA on a poly mesh it tells me it's an X3DObject - so I
>> > try getting the activeprimitive of it and it tells me it's a
>> > primitive.
>> >
>> > Any idea why I'm getting non-specific types? This is in C++
>> >
>> > CRef item = app.GetSelection().GetItem(0) ;
>> > if (item.IsA(siPolygonMeshID) ) {
>> > //nope it says it's not...
>> >
>> > Thanks,
>> >
>> > Alan.
>> >
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